Scaling dont do what I want

Getting Started Newbie Questions
#1

Hey folks!

I have some veritable probems with the concept of scaling.

I

I am using a standard config.lua made by Lua Glider as you can see below.

 content = { width = 800, height = 1280, scale = "letterBox", fps = 30, },

I am using among others a Samsung Galaxy Tab 10.1 (1280x800, 149ppi) to develop.

So, here the problems begins. :frowning:

When I comment the scale variable in config.lua to use it with my Galaxy tab black bars appears and I dont know why because all my graphics I am using got exact all the measurements needed (800x1280, 149dpi).

On the other and when I comment the scaling variable to use config.lua on other (smaller) devices like an Android Sony I cant see anything in the correct way…

I think I didn’t understand the Corona scaling concept although I thought I did. :wink:

Thanks in advance!

#2

Device physical size in pixels and area you work is different. For corona this 1280 is between this black bars. Check display.screenOriginY property in api docs

#3

I don’t understand why or the concept behind?

What are the difference between “physical device area” and “area I am working with”?

May you give me an example?

Thanks in advance?

#4

http://forums.coronalabs.com/topic/39290-modernizing-the-configlua-rob-miracle-article/

Remember the content area does not have to map 1 to 1 with the screen.  That’s why we are (…) so that people stop thinking in screen pixels.  Think of your app in screen space and let Corona figure it out.

#5

Device physical size in pixels and area you work is different. For corona this 1280 is between this black bars. Check display.screenOriginY property in api docs

#6

I don’t understand why or the concept behind?

What are the difference between “physical device area” and “area I am working with”?

May you give me an example?

Thanks in advance?

#7

http://forums.coronalabs.com/topic/39290-modernizing-the-configlua-rob-miracle-article/

Remember the content area does not have to map 1 to 1 with the screen.  That’s why we are (…) so that people stop thinking in screen pixels.  Think of your app in screen space and let Corona figure it out.